Benelli 750 Sei
Encyclopedia
The Benelli 750 Sei is a motorcycle
that was produced by Italian manufacturer Benelli
from 1972 to 1978. It was the first production motorcycle with a 6-cylinder engine. The engine was based on the four-cylinder Honda CB500
, but with two extra cylinders. The cylinder head fins of the Sei were squared off to provide a cosmetic individuality, but otherwise the engine is in most respects obviously derived from the Honda. The "angular, bold design" was by Carrozzeria Ghia
.
Despite the extra cylinders, the Sei's width was kept to a minimum by siting the alternator (which, on the Honda, is at the left-hand end of the crankshaft) behind the cylinders. Cooling was improved by having air passages between the cylinders; the Sei had three Dell'Orto
VHB 24 mm carburetors (the Honda CB 500 had four, for four cylinders). After four years of production during which they sold 3,200 Sei models, Benelli developed the 750 Sei into a 900 cc motorcycle, with six-into-two exhausts, but built less than 2,000 of them.
Motorcycle
A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.Motorcycles are one of the most...
that was produced by Italian manufacturer Benelli
Benelli (motorcycles)
Benelli is an Italian Motorcycle manufacturer owned by Chinese company Qianjiang Group. It once manufactured shotguns, although this part of the business is now a separate company.-Early history:...
from 1972 to 1978. It was the first production motorcycle with a 6-cylinder engine. The engine was based on the four-cylinder Honda CB500
Honda CB500
The Honda CB500 four, introduced early in the 1970s, was similarly styled to the CB750, but smaller and lighter, with an output of 48 bhp and a manufacturer's specified top speed of 102 mph. Like the earlier CB750 it sported a single front hydraulic disc brake, rear drum brake, electric...
, but with two extra cylinders. The cylinder head fins of the Sei were squared off to provide a cosmetic individuality, but otherwise the engine is in most respects obviously derived from the Honda. The "angular, bold design" was by Carrozzeria Ghia
Carrozzeria Ghia
Carrozzeria Ghia SpA is one of the most famous Italian automobile design and coachbuilding firms, established by Giacinto Ghia and Gariglio as Carrozzeria Ghia & Gariglio, located at 4 Corso Valentino in Turin....
.
Despite the extra cylinders, the Sei's width was kept to a minimum by siting the alternator (which, on the Honda, is at the left-hand end of the crankshaft) behind the cylinders. Cooling was improved by having air passages between the cylinders; the Sei had three Dell'Orto
Dell'Orto
Dell'Orto is an Italian company, headquartered in Cabiate, specialized in the construction of carburetors and electronic injection systems. The company was founded in 1933 as "Società anonima Gaetano Dell'Orto e figli"...
VHB 24 mm carburetors (the Honda CB 500 had four, for four cylinders). After four years of production during which they sold 3,200 Sei models, Benelli developed the 750 Sei into a 900 cc motorcycle, with six-into-two exhausts, but built less than 2,000 of them.